ISNUMBER(B5)checks whether the value in cellB5is a number. If it evaluates toTRUE, theIFstatement proceeds to the second argument. B5^(1/2), calculates the square root of the value in cellB5. It raises the value in B5 to the power of1/2, which is equivalent to taking the square r...
There is in mathematical circles (ha!) a great and lengthy tradition of making mnemonics to memorize the digits of pi: pi= 3.14159 26535 89793 23846 26433 83279 502…. In a traditionalpimnemonic, such as the one above, the number of characters in each word is used to represent a digit ...
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